The following passage has been extracted from the prefaceof his book Kraftwerk: I Was a Robot.

QuoteFrom the start, Ralf Hütter and Florian Schneider-Esleben had suitedeach other better. They had come from prosperous families where there hadnever been a lack of money or, in particular, of culture or education. They hadelegant manners and had travelled widely in childhood. Karl Bartos and I, onthe other hand, came from the so-called middle class. Of course, we had alsobeen educated, particularly in relation to what is described as "emotional intelligence",although we also knew what it meant not to have any money sometimes, and what itwas like if someone needed emotional support. On top of that, we were youthful andtalented, and we stuck together for a long time because we had crucial things in commonand because we respected each other so much as we were. Instinctively, each of us sensedthat our special relationship would be capable of producing great things in the future.

QuoteThe doc is a collaborative effort co-directed by Reto Caduff and Plank's son Stephan.

"I discovered his work in the early '80s when albums by Eurythmics or Ultravox, Les Ritas Mitsouko, Freur or by German new wave acts such as Ideal, Rheingold or DAF had the Conny Plank credit on the cover. Little did I know at that time of his earlier influence: that he brought Kraftwerk to the recording studio for the first time..." said Caduff speaking to The Wire.